Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vong moi de snippets" » "vong doi de snippets", "trong moi de snippets", "luong moi de snippets", "vong moi den snippets", "vong moi ve snippets", "vong moi ke snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("vong moi de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vong moi de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vong moi de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vong moi de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.